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Full-Stack Development

Extend your engineering team and improve the platform you already have.

Senior engineers who work in your codebase and your tools, whether that's adding features to an existing platform, fixing what slows it down, or adding capacity to a new product.

This service fits when…

  • Your roadmap is bigger than your team.
  • The platform has become slow, fragile or hard to change.
  • You're taking over code from another team or agency.
  • You need extra senior capacity on a new product.

Problems we solve

From the problem to what we build.

  1. Features wait because the team is at capacity.

    What we build: Engineers who join your sprints and deliver features in your repositories and review process.

  2. Inherited code nobody wants to touch.

    What we build: A review of the codebase, then stabilisation: tests, fixes and documentation where it's missing.

  3. Slow pages, timeouts and fragile releases.

    What we build: Performance and reliability work on the front end, APIs and database.

  4. An ageing stack holding the product back.

    What we build: Step-by-step modernisation, so the product keeps running while it improves.

How the engagement works

How we work with you.

  1. 01

    Onboard

    Access, environments and a walkthrough of your codebase and priorities.

  2. 02

    Assess

    An honest review of risks and quick wins, shared with you.

  3. 03

    Deliver

    Work in your sprints, your repos and your review process.

  4. 04

    Hand over

    Documentation and knowledge transfer, so nothing depends on us.

  • A written update and demo every week
  • One accountable lead
  • Work in your repositories
  • Code and IP owned by you

Ways to start

  • Team extension

    Engineering leaders who need more senior capacity, on a new product or an existing platform.

    Our engineers join your team, working in your repos, rituals and review process.

    You get

    • Senior engineers in your team
    • Your tools and standards
    • Knowledge that stays with you
  • Ongoing product team

    Products that need steady improvement after launch.

    A dedicated Corexlab team working through your roadmap, with priorities agreed each cycle.

    You get

    • Regular releases
    • Maintenance and support
    • Weekly updates and demos
  • Discovery sprint

    Turning an idea or a problem into a clear plan before committing to a build.

    A short, fixed-scope phase of workshops, research and technical planning with your team.

    You get

    • Agreed scope and priorities
    • Prototype or technical plan
    • Estimate for the next step

Technical capabilities

What we build it with.

Front end
ReactNext.js
Back end
Node.jstRPCREST APIs
Data
PostgreSQLMySQLMongoDB
Cloud
AWS
Ways of working
Your reposYour CI/CDYour issue tracker

Cost and timeline

What shapes the estimate.

  • Codebase size and state

    How large the system is, and how much stabilisation it needs first.

  • Test coverage

    Well-tested code is faster and safer to change.

  • Team shape

    How many engineers, and which roles.

  • Access and setup

    Environments, security reviews and onboarding to your tools.

  • Duration

    A focused piece of work, or ongoing capacity month to month.

A scoping call turns these into a real estimate for your project.

FAQ

Common questions.

Can you work with our in-house team?

Yes. We join your stand-ups, work in your repositories and follow your review and release process.

Can you take over code another team wrote?

Yes. We start with a review so you know the risks and what to fix first.

Is this only for existing platforms?

No. Team extension also works for new products, when you want senior engineers alongside your own people.

Who owns the work?

You do. Everything is committed to your repositories and the IP is yours.

Tell us what you're working on.

Share where things stand and what you need. We'll come back with questions and a suggested next step.

Book a call (opens Calendly in a new tab)